GIVEN
The number of novels read is N and the number of months is M.
Dan is to read 4 novels per month.
SOLUTION
In one month, Dan reads 4 novels.
In two months, Dan is to read:

In three months, Dan is to read:

Therefore, in M months, Dan is to read:

Hence, the equation will be:

The graph of the equation can be drawn using the table of values given below:
where
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